Correcting method for the influence of soil sampling disturbance on deformation and strength characteristics of natural soils

• Project/Area Number: 24560596
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Geotechnical engineering
• Research Institution: Hokkaido University
• Principal Investigator: FUKUDA Fumihiko 北海道大学, 工学(系)研究科(研究院), 助教 (80241355)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000); Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2012: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
• Keywords: サンプリング / 乱れ / 応力解放 / セメンテーション / 地盤工学 / 地盤調査 / 粘土 / 構造 / 土質試験 / 試料の乱れ / 異方変形特性 / 弾塑性パラメーター / 室内試験

Outline of Final Research Achievements

It is widely recognized that mechanical characteristics of the soil samples taken from the grounds with soil sampling technique involving stress-release and mechanical disturbance usually have different characteristics from the samples being in in-situ state. It is also believed that the influence of the soil sampling (stress release and disturbance) is more severe to soil samples with cementation than the samples without cementation. This research mainly investigates the influence of the soil sampling on the mechanical characteristics of the soil sample with the cementation effect.

Research Products

• [Journal Article] セメント添加粘土の圧密特性におよぼすセメント量と養生期間の影響 (2013)
  • Author(s): 瀧本 興，福田文彦
  • Journal Title: 地盤工学会北海道支部技術報告集 Volume: 53 Pages: 77-80
• [Presentation] 構造を持った粘土のサンプリングに伴う乱れの研究 (2014)
  • Author(s): 福田文彦
  • Organizer: 第49回地盤工学研究発表会
  • Place of Presentation: 北九州国際会議場
• [Presentation] 少量のセメントを添加した粘土の力学特性 (2014)
  • Author(s): 寺本崇宏
  • Organizer: 第49回地盤工学研究発表会
  • Place of Presentation: 北九州国際会議場
• [Presentation] サンプリングが粘性土の強度におよぼす影響 (2013)
  • Author(s): 福田文彦，近藤雄大，小宮耕介
  • Organizer: 第48回地盤工学研究発表会
  • Place of Presentation: 富山市 富山国際会議場ほか